| 1 | 1136466-93-7 | 7-(2-环戊基肼基)-7-氧代庚酸 | IDE 2 | C12H20N2O3
| | |
| 2 | 77-30-5 | 己巴比妥 | Hexethal | C12H20N2O3
| | |
| 3 | 146621-66-1 | pirbuterol | pirbuterol | C12H20N2O3
| | |
| 4 | 145071-34-7 | BRN 5816509 | BRN 5816509 | C12H20N2O3
| | |
| 5 | 76-23-3 | 替曲比妥 | tetrabarbital | C12H20N2O3
| | |
| 6 | 53943-64-9 | Butalbital Impurity 2 | Butalbital Impurity 2 | C12H20N2O3
| | |
| 7 | | DI-SEC-BUTYL-BUTABARBITAL | DI-SEC-BUTYL-BUTABARBITAL | C12H20N2O3
| | |
| 8 | 17013-41-1 | 5,5-dibutylbarbituric acid | 5,5-dibutylbarbituric acid | C12H20N2O3
| | |
| 9 | 685523-06-2 | 佩林多普利杂质 | Perindopril-N-desethylpentanoate | C12H20N2O3
| | |
| 10 | 5770-40-1 | 1,3-Dibutyl-pyriMidine-2,4,6-trione | 1,3-Dibutyl-pyriMidine-2,4,6-trione | C12H20N2O3
| | |
| 11 | | 1-Pyruvoyl-N-tert-butyl-L-prolinamide | 1-Pyruvoyl-N-tert-butyl-L-prolinamide | C12H20N2O3
| | |
| 12 | 913642-47-4 | 1-Boc-4-(cyanohydroxyMethyl)piperidine | 1-Boc-4-(cyanohydroxyMethyl)piperidine | C12H20N2O3
| | |
| 13 | 66968-91-0 | 5-Ethyl-1-methyl-5-pentylbarbituric acid | 5-Ethyl-1-methyl-5-pentylbarbituric acid | C12H20N2O3
| | |
| 14 | 1008015-40-4 | Cyclohexyl 2-(3-oxo-2-piperazinyl)acetate | Cyclohexyl 2-(3-oxo-2-piperazinyl)acetate | C12H20N2O3
| | |
| 15 | 1312456-05-5 | 4-氧代-3,9-二氮杂双环[4.2.1]壬烷-9-羧酸叔丁酯 | 9-Boc-4-oxo-3,9-diaza-bicyclo[4.2.1]nonane | C12H20N2O3
| | |
| 16 | 6270-45-7 | 5-Ethyl-5-isopentyl-1-methylbarbituric acid | 5-Ethyl-5-isopentyl-1-methylbarbituric acid | C12H20N2O3
| | |
| 17 | 126396-51-8 | 2-(3-氧代-2,4,4A,5,6,7,8,8A-八氢-1H-喹喔啉-2-基)乙酸乙酯 | Ethyl (3-oxodecahydroquinoxalin-2-yl)acetate | C12H20N2O3
| | |
| 18 | 270594-18-8 | 4-丙烯酰基哌嗪-1-羧酸叔丁酯 | tert-Butyl 4-acryloylpiperazine-1-carboxylate | C12H20N2O3
| | |
| 19 | 1392803-91-6 | 6-氨基甲酰基-3-氮杂双环[3.1.1]庚烷-3-羧酸叔丁酯 | 3-Boc-3-azabicyclo[3.1.1]heptane-6-carboxaMide | C12H20N2O3
| | |
| 20 | 55134-03-7 | 5-Ethyl-1,3-dimethyl-5-sec-butylbarbituric acid | 5-Ethyl-1,3-dimethyl-5-sec-butylbarbituric acid | C12H20N2O3
| | |
| 21 | 16603-10-4 | 1-(3,4,5-Trimethoxy-α-methylphenethyl)hydrazine | 1-(3,4,5-Trimethoxy-α-methylphenethyl)hydrazine | C12H20N2O3
| | |
| 22 | 66968-35-2 | 5-Ethyl-5-(1-ethylpropyl)-1-methylbarbituric acid | 5-Ethyl-5-(1-ethylpropyl)-1-methylbarbituric acid | C12H20N2O3
| | |
| 23 | | 3-(4-CYCLOPENTYLPIPERAZIN-1-YL)-3-OXOPROPANOIC ACID | 3-(4-CYCLOPENTYLPIPERAZIN-1-YL)-3-OXOPROPANOIC ACID | C12H20N2O3
| | |
| 24 | 15517-26-7 | 1-Butyl-5,5-diethyl-2,4,6(1H,3H,5H)-pyrimidinetrione | 1-Butyl-5,5-diethyl-2,4,6(1H,3H,5H)-pyrimidinetrione | C12H20N2O3
| | |
| 25 | 96053-48-4 | 阿伐曲波帕杂质1 | 1-(4-PIPERIDINYLCARBONYL)-4-PIPERIDINECARBOXYLIC ACID | C12H20N2O3
| 杂质对照品 | |
| 26 | 578706-33-9 | tert-butyl 4-cyclopropyl-3-oxopiperazine-1-carboxylate | tert-butyl 4-cyclopropyl-3-oxopiperazine-1-carboxylate | C12H20N2O3
| | |
| 27 | | 5-(hexyloxy)-1,3-dimethyl-1H-pyrazole-4-carboxylic acid | 5-(hexyloxy)-1,3-dimethyl-1H-pyrazole-4-carboxylic acid | C12H20N2O3
| | |
| 28 | 1194376-44-7 | 6-氧代-2,7-二氮杂螺[4,4]壬烷-2-甲酸叔丁酯 | tert-butyl-6-oxo-2,7-diazaspiro[4.4]nonane-2-carboxylate | C12H20N2O3
| 有机原料;有机酸酯 | |
| 29 | 1160246-72-9 | 2-氧代-1,7-二氮杂螺[4.4]壬烷-7-羧酸叔丁酯 | tert-Butyl 2-oxo-1,7-diazaspiro-[4.4]nonane-7-carboxylate | C12H20N2O3
| | |
| 30 | 1330765-33-7 | 3-(2-氧代吡咯烷-3-基)氮杂环丁烷-1-羧酸叔丁酯 | Tert-Butyl 3-(2-Oxopyrrolidin-3-Yl)Azetidine-1-Carboxylate | C12H20N2O3
| | |
| 31 | 667462-11-5 | 3-(4-羟基哌啶-1-羰基)哌啶-1-苯甲醛 | 3-(4-HYDROXYPIPERIDINE-1-CARBONYL)PIPERIDINE-1-CARBALDEHYDE | C12H20N2O3
| | |
| 32 | 774609-73-3 | N-BOC-4-羟基-4-腈甲基-哌啶 | tert-Butyl 4-(cyanomethyl)-4-hydroxypiperidine-1-carboxylate | C12H20N2O3
| | |
| 33 | 1975118-74-1 | ethyl 3-(sec-butoxymethyl)-1-methyl-1H-pyrazole-4-carboxylate | ethyl 3-(sec-butoxymethyl)-1-methyl-1H-pyrazole-4-carboxylate | C12H20N2O3
| | |
| 34 | 448281-69-4 | (3S)-1-[(3R)-3-哌啶甲酰基]-3-哌啶甲酸 | (3S)-1-[(3R)-3-Piperidinylcarbonyl]-3-Piperidinecarboxylic Acid | C12H20N2O3
| 有机原料;羧酸化合物 | |
| 35 | 1353953-74-8 | [(1-Acetyl-pyrrolidin-2-ylMethyl)-cyclopropyl-aMino]-acetic acid | [(1-Acetyl-pyrrolidin-2-ylMethyl)-cyclopropyl-aMino]-acetic acid | C12H20N2O3
| | |
| 36 | 7511-18-4 | | 4-Piperidineaceticacid, 1-(aminocarbonyl)-3-ethenyl-, ethyl ester | C12H20N2O3
| | |
| 37 | 392331-78-1 | 2-氧代-1,7-二氮杂螺[3.5]壬烷-7-羧酸叔丁酯 | 2-Oxo-1,7-diazaspiro[3.5]nonane-7-carboxylic acid tert-butyl ester | C12H20N2O3
| | |
| 38 | 57562-99-9 | 5-Ethyl-1-methyl-5-(1-methylbutyl)-2,4,6(1H,3H,5H)-pyrimidinetrione | 5-Ethyl-1-methyl-5-(1-methylbutyl)-2,4,6(1H,3H,5H)-pyrimidinetrione | C12H20N2O3
| | |
| 39 | 1975118-72-9 | methyl 1-methyl-3-[(3-methylbutoxy)methyl]-1H-pyrazole-4-carboxylate | methyl 1-methyl-3-[(3-methylbutoxy)methyl]-1H-pyrazole-4-carboxylate | C12H20N2O3
| | |
| 40 | | 1-[(1-ETHYLPYRROLIDIN-2-YL)METHYL]-5-OXOPYRROLIDINE-3-CARBOXYLIC ACID | 1-[(1-ETHYLPYRROLIDIN-2-YL)METHYL]-5-OXOPYRROLIDINE-3-CARBOXYLIC ACID | C12H20N2O3
| | |
| 41 | 157327-42-9 | 3-((二甲基氨基)亚甲基)-4-氧代吡咯烷-1-羧酸叔丁酯 | Tert-Butyl 3-((dimethylamino)methylene)-4-oxopyrrolidine-1-carboxylate | C12H20N2O3
| | |
| 42 | 227078-96-8 | ETHYL 4-BUTYL-6-METHYL-2-OXO-1,2,3,4-TETRAHYDROPYRIMIDINE-5-CARBOXYLATE | ETHYL 4-BUTYL-6-METHYL-2-OXO-1,2,3,4-TETRAHYDROPYRIMIDINE-5-CARBOXYLATE | C12H20N2O3
| | |
| 43 | 1273568-51-6 | Cis-Tert-Butyl4-Oxohexahydro-1H-Pyrrolo[3,4-C]Pyridine-2(3H)-Carboxylate | Cis-Tert-Butyl4-Oxohexahydro-1H-Pyrrolo[3,4-C]Pyridine-2(3H)-Carboxylate | C12H20N2O3
| | |
| 44 | 1251009-03-6 | 8-氧代-2,7-二氮杂螺[4,4]壬烷-2-甲酸叔丁酯 | 8-oxo-2,7-Diazaspiro[4.4]nonane-2-carboxylic acid 1,1-dimethylethyl ester | C12H20N2O3
| 分子砌块 | |
| 45 | 100526-15-6 | 1(2H)-Quinoxalineacetic acid, octahydro--alpha-,3-dimethyl-2-Oxo- (6CI) | 1(2H)-Quinoxalineacetic acid, octahydro--alpha-,3-dimethyl-2-Oxo- (6CI) | C12H20N2O3
| | |
| 46 | 1251012-56-2 | Trans-(3aS,7aS)-叔-丁基 4-氧亚基六氢-1H-吡咯并[3,4-c]吡啶-2(3H)-甲酸基酯 | trans-tert-Butyl 4-oxohexahydro-1H-pyrrolo[3,4-c]pyridine-2(3H)-carboxylate | C12H20N2O3
| | |
| 47 | 1142214-55-8 | MFCD12027529 | 2,2-dimethyl-3-[(4-methylpiperazin-1-yl)carbonyl]cyclopropanecarboxylic acid | C12H20N2O3
| | |
| 48 | 144689-93-0 | 4-(1-羟基-1-甲基乙基)-2-丙基-1H-咪唑-5-羧酸乙酯 | [5-(1-Hydroxyl-1-methylethyl)-2-propyl-imidazol-4-yl]carboxylic acid ethyl ester | C12H20N2O3
| 咪唑;原料;中间体;原料药;医药原料;化工原料;其它杂环;抗高血压;杂质对照;医药中间体 | 医药 |
| 49 | | 4-ETHYL-2-OXO-6-PROPYL-1,2,3,4-TETRAHYDRO-PYRIMIDINE-5-CARBOXYLIC ACIDETHYL ESTER | 4-ETHYL-2-OXO-6-PROPYL-1,2,3,4-TETRAHYDRO-PYRIMIDINE-5-CARBOXYLIC ACIDETHYL ESTER | C12H20N2O3
| | |
| 50 | | 4-(1-hydroxy-1-methyl ethyl)-2-n-propyl-1H-imidazole-5-carboxylic acid ethyl ester | 4-(1-hydroxy-1-methyl ethyl)-2-n-propyl-1H-imidazole-5-carboxylic acid ethyl ester | C12H20N2O3
| Organic acids | |
| 51 | 706803-54-5 | 2(5H)-Isoxazolecarboxamide, N-(1,1-dimethylethyl)-3-methyl-4-(1-methylethyl)-5-oxo- | 2(5H)-Isoxazolecarboxamide, N-(1,1-dimethylethyl)-3-methyl-4-(1-methylethyl)-5-oxo- | C12H20N2O3
| | |
| 52 | 947322-84-1 | 2-Pyrimidineacetic acid, 1-ethyl-1,2-dihydro-2-hydroxy-4,6-dimethyl-, ethyl ester | 2-Pyrimidineacetic acid, 1-ethyl-1,2-dihydro-2-hydroxy-4,6-dimethyl-, ethyl ester | C12H20N2O3
| | |
| 53 | 1872340-67-4 | 1H-Pyrazole-4-carboxylic acid, 1-(2-hydroxy-1,2-dimethylpropyl)-5-methyl-, ethyl ester | 1H-Pyrazole-4-carboxylic acid, 1-(2-hydroxy-1,2-dimethylpropyl)-5-methyl-, ethyl ester | C12H20N2O3
| | |
| 54 | 1935385-27-5 | Pyrrolo[1,2-a]pyrazine-2(1H)-carboxylic acid, hexahydro-4-oxo-, 1,1-dimethylethyl ester | Pyrrolo[1,2-a]pyrazine-2(1H)-carboxylic acid, hexahydro-4-oxo-, 1,1-dimethylethyl ester | C12H20N2O3
| | |
| 55 | 943147-84-0 | (4R,5R)-4-氰基-2,2,5-三甲基噁唑烷-3-羧酸叔丁酯 | 3-Oxazolidinecarboxylic acid, 4-cyano-2,2,5-trimethyl-, 1,1-dimethylethyl ester, (4R,5R)- | C12H20N2O3
| | |
| 56 | 145071-35-8 | 1(2H)-Pyridinecarboxylic acid, 3,6-dihydro-5-((methoxyimino)methyl)-, 1,1-dimethylethyl ester, (E)- | 1(2H)-Pyridinecarboxylic acid, 3,6-dihydro-5-((methoxyimino)methyl)-, 1,1-dimethylethyl ester, (E)- | C12H20N2O3
| | |
| 57 | 2209874-09-7 | 杜洛巴坦钠中间体3A | 1(2H)-Pyridinecarboxylic acid, 2-(aminocarbonyl)-3,6-dihydro-3-methyl-, 1,1-dimethylethyl ester, (2S,3R)- | C12H20N2O3
| β内酰胺酶抑制剂中间体 | |
| 58 | 25231-54-3 | N-(1,1-二甲基-3-氧代丁基)-2-丙烯酰胺与2-丙烯酰胺的聚合物 | 2-Propenamide, N-(1,1-dimethyl-3-oxobutyl)-, polymer with 2-propenamide 2-Propenamide,N-(1,1-dimethyl-3-oxobutyl)-,polymer with 2-propenamide | C12H20N2O3
| | |